Regular Expressions 101

Pro

^start of line

Character Class[a-zA-Z0-9]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[a-zA-Z]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-zA-Z0-9]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

^[a-zA-Z0-9]*[a-zA-Z]+[a-zA-Z0-9]*$

New

admin
l0v3y0oplj
123admin
123ADMIN?
123ADMIN
am.ouy?
12345678909776apouatgb
1ads967bjk
ADMIN123
123
,;/.;..,,;.#$¨$#¨%
!@#$%3333333333333333333332

admin
l0v3y0oplj
123admin
123ADMIN?
123ADMIN
am.ouy?
12345678909776apouatgb
1ads967bjk
ADMIN123
123
,;/.;..,,;.#$¨$#¨%
!@#$%3333333333333333333332